CPC H01L 31/188 (2013.01) [B23K 1/0008 (2013.01); H01L 31/0504 (2013.01)] | 6 Claims |
1. A method for a fixed connection of a solar cell string, comprising:
laying the solar cell string; and
performing a melting-solidification operation;
wherein the laying of the solar cell string comprises:
stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit; wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other; the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit; wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other; the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
wherein the stacking comprises:
laying the second solder ribbon section on the back film;
laying the solar cell on the second solder ribbon section;
laying the third solder ribbon section on the solar cell; and
laying the front film on the third solder ribbon section to form the solar cell unit;
connecting N solar cell units in series to form the solar cell string, wherein N is an integer equal to or greater than 2; and
placing a first press on the front film to form a laying unit, and placing a second press on the front film of the laying unit, wherein the first press presses against at least a middle portion of the front film; and the second press presses against at least a head portion of the front film; and the head portion is an end of the front film covering the third solder section; and
the melting-solidification operation is performed through steps of:
after the first press is placed on the front film, subjecting the laying unit to melting and solidification; placing the second press on the laying unit; transferring the laying unit with the second press to a melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string; and removing the first press and the second press from the front film of the solar cell string; or
after the first press and the second press are both placed on the front film of the laying unit; transferring the laying unit with the second press to the melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string; and removing the first press and the second press from the front film of the solar cell string.
|